Error code
OBD2 U0424
OBD2U0424
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Invalid Data Received From HVAC Control Module.
Severity
moderateThe car is generally still drivable, but you may experience issues with your air conditioning system.
Summary
The U0424 code indicates that the HVAC control module is sending invalid data to other modules in the car. This issue affects the air conditioning system.
Common Causes
- Faulty or damaged wiring between the HVAC control module and other vehicle systems
- Malfunctioning HVAC control module
Fixes
- Repair or replace the faulty wiring and/or HVAC control module.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- U0400Invalid Data Received
- U0401Invalid Data Received From ECM/PCM
- U0402Invalid Data Received From Transmission Control Module
- U0403Invalid Data Received From Transfer Case Control Module
- U0404Invalid Data Received From Gear Shift Control Module
- U0405Invalid Data Received From Cruise Control Module
- U0406Invalid Data Received From Fuel Injector Control Module
- U0407Invalid Data Received From Glow Plug Control Module
- U0408Invalid Data Received From Throttle Actuator Control Module
- U0409Invalid Data Received From Alternative Fuel Control Module
- U0410Invalid Data Received From Fuel Pump Control Module
- U0411Invalid Data Received From Drive Motor Control Module